Chimney Pass Thru Options

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Jaydubz18

New Member
Nov 11, 2023
4
Upstate New York
Hello Everyone,

My first post, so if I am doing anything incorrectly please let me know.

I have an old fisher wood stove with a brick surround. My 6inch OD passes into what appears to be a clay 6inch ID that goes to my block chimney. The clay has some cracks in it so I was curious as to what options I have for a pass thru. I'm concerned the cracks will cause heat to escape and catch something in my walls. Which would not be fun. I'm just looking for a safe way to fix this without spending the 10000 dollars the chimney place quoted me.

My first thought was maybe a double wall pipe in my wall that the 6 inch from my stove connects to? No idea if that is doable, or proper.

Any advice I would deeply appreciate! Attached are some photos for reference. This was all installed when I purchased the house.

Thank you!
-Joe

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What is behind the brick wall? Any combustibles?
 
What is behind the brick wall? Any combustibles
The hole leads directly into a self standing chimney outside. In between the chimney and the wall is my normal siding. So I assume there is wood and insulation in there, but I can't be sure.

The photo attached is where the pipe goes into my chimney outside. I can see there is siding between them. This is why I'm not quite sure what to do.

[Hearth.com] Chimney Pass Thru Options
 
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The hole leads directly into a self standing chimney outside. In between the chimney and the wall is my normal siding. So I assume there is wood and insulation in there, but I can't be sure.
Then.you are going to need an insulated thimble. Did they check the liner as well?
 
Then.you are going to need an insulated thimble. Did they check the liner as well?
This was last year they checked it, and I apologize for my ignorance. By liner do you mean inside the chimney itself? They said the chimney looked good. It's just the pass thru they were concerned about. The quote they gave me was to basically tear down all the brick on the wall with the hole and rebuild it with new passthru that is insulated.
 
No need to tear it all down at all
 
No need to tear it all down at all
I didn't think so, it seemed a bit overkill to me. So you think just an insulated thimble. Perhaps just pull out the bricks surrounding the hole and remove the clay pass thru. And install the thimble? That doesn't sound too bad. The clay is only 6inchs wide. Anything insulated I imagine would be at least 7. So that should come out to replace right?

Thank you for helping me. I really appreciate it.